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136
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DLOG
2008
15 years 4 months ago
Taming the Infinite Chase: Query Answering under Expressive Relational Constraints
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
Andrea Calì, Georg Gottlob, Michael Kifer
ADHOC
2005
143views more  ADHOC 2005»
15 years 2 months ago
Active query forwarding in sensor networks
While sensor networks are going to be deployed in diverse application specific contexts, one unifying view is to treat them essentially as distributed databases. The simplest mech...
Narayanan Sadagopan, Bhaskar Krishnamachari, Ahmed...
198
Voted
PODS
2011
ACM
238views Database» more  PODS 2011»
14 years 5 months ago
Beyond simple aggregates: indexing for summary queries
Database queries can be broadly classified into two categories: reporting queries and aggregation queries. The former retrieves a collection of records from the database that mat...
Zhewei Wei, Ke Yi
209
Voted
ICDE
2009
IEEE
121views Database» more  ICDE 2009»
16 years 3 months ago
Holistic Query Transformations for Dynamic Web Applications
A promising approach to scaling Web applications is to distribute the server infrastructure on which they run. This approach, unfortunately, can introduce latency between the appl...
Amit Manjhi, Charles Garrod, Bruce M. Maggs, Todd ...
208
Voted
ICDE
2006
IEEE
188views Database» more  ICDE 2006»
16 years 3 months ago
Efficiently Evaluating Order Preserving Similarity Queries over Historical Market-Basket Data
We introduce a new domain-independent framework for formulating and efficiently evaluating similarity queries over historical data, where given a history as a sequence of timestam...
Reza Sherkat, Davood Rafiei